Sewing-machine



(No Model.) 3 Sheets-Shqet I.

E. 'H. TRIESLER. SEWING MAOIHINE.

Patentd July 10, 1888.

Fig.1.

' WITNESSES:

I NVENTOR E ATTORNEY,

I N. PETERiFMWUl'IOIHPMR Wuhinglon. D.Q

(No Model.)

E. H. TRIESLER.

SEWING MACHINE.

No. 385,973. Patented July 10, 1888.

3 Sheets-Sheet 2.

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WITNESSES INVENTORI 65 11214 (51 @000 6 J g BY @0 0 /3. aMww ATTORNEY.

N. PETERS Phob-Lflhcgraphur, Withingtnn. D. C.

r 3 Sheets-Sheet 3.

. (No Model.)

I H- TRIESLER.

SEWING MACHINE.

Patented July 10, 1888. Fi .1?

INVENTOR: 6.1%. JWZW WITNESSES Am/a aw ATTORNEY.

n. m'zns. mu my. waning n. c.

UNITED STATES PATENT OFFICE.

ERNEST HENRY TEIESLER, .OF BALTIMORE, MARYLAND.-

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 385,973, dated July 10, 1888.

Application filed Sup tembcr 19, 1887. Serial No. 250,041. (No model.)

upper and lower end it has forked armsff,

.To all whom it 11mg concern.-

the upper one, f, of which takes astride of the Be it known that I, ERNEST HENRY Turns- LER, a citizen of the United States, residing at Baltimore, in the State of Maryland, have 5 invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification.

My invention relates to an improved sewing-machine, and is illustrated in the accompanying drawings, in which- Figure 1 represents a front elevation having the standard partly broken away, showing my invention. Fig. 2 is a crosssection of-the bedplate. Fig. 3 is a side elevation, in which the front of the head-is shown partly in section. Fig. 4 is a vertical cross-section of the head on line 90 x in Fig. 1. Fig. 5 is avertical crosssection of the head on the line 3 3 Fig. 1. Fig. 6 is a cross-section of the bed-plate on the line 2 2, Fig. 1. Fig.7 is a vertical section of the bed-plate on the line at, Fig. 1. Figs. 8, 9, 10, and 11 are views of the shuttle. Fig. 12 is a top view of the machine. Fig. 13 is a top view of the bed-plate, partly broken away, showing the parts below.

Referring to the drawings, the letter A designates the bed-plate; B, the hollow standard rising therefrom; O, the overhanging arm supported by said standard; 0, the head at the end of the overhanging arm; D, the upper main shaft revoluble in bearings in the overhanging arm; E, the needle-bar, and F the presser-bar. All of these parts areof usual bar forward and back. The size of stitch is form. governed of course by the extent of movement The upper main shaft, D, is connected with i forward or back of the feed-bar, and this latthe needle-bar E by a crank-head and link of ter is regulated by the bar 0, which is movawell-known form in sewing-machines. Moveble endwise, and is also pivot-ed and has a tament is imparted to the shuttle-shaft G and pered end, 0, (see Figs. 1, 6, and 13,) which feed-lifting shaft H below the bed-plate by occupies the slot nin the feed-bar. The stitchthe oscillating shafts I I, which connect with regulating bar 0 is in two sections, which are the upper main shaft, D. The horizontal osunited by a j oint or pivot, 0 One section of cillating shaft I has bearings a in the overthis bar fits in a slide-bearing or keeper, 0 hanging arm 0, and'is provided with a forked below the table-top, and has a set-screw, 0, arm, I), (see Figs. 1 and 4,) which takes astride which projects up through a slot in the top. of a cam, c, on the upper main shaft, D, the The stitch-regulating bar may be moved endrevolving of which will cause the said shaft I wise as far as the slot in the top will permit, to oscillate or rock. This horizontal oscillatand by such movement its tapered end 0" will ing shaft has near its end an arm, d, provided be inserted farther into the slot at of the feedwith a friction-ball, d. The vertical oscillatbar,or will be partly withdrawn, according to 50 ing shaft 1 has bearings e, and extends up and the direction it is moved. When the feed-bar down through the hollow standard B. At its oscillating shaft, and the lower one, f, takes astride of a friction ball, g,projecting from a feed-lifting shaft H. It will thus be seen that one vertical shaft, 1', only occupies the hollow standard B, and serves to communicate movement from the upper main shaft, D, to the lower shuttle-shaft, G,and feed-lifting shaft H.

The shuttle shaft G and feed-lifting shaft H are each provided with an arm, h h, (see Figs. 7 and 13,) and the bar 9 connects the two has a friction-ball, g, which is between the two forks of the arm f. The shafts G and H have a rocking movement.

The shuttle J may be of any of the various known oscillating forms, and is carried in the holder K,which is on the shaft G. The shuttle is more particularly described hereinafter.

The feed-bar L is of the four-motion kind. At each end it works in a guide, i, which is attached to the bed-plate. A cam, 70, on the lifting-shaft H, serves to raise and lower the feed-bar L. Arm Z is on the shaft G and. has'a segment-shaped slot, Z, curving concentric with the axis of shaft, and a link, m, (see Figs. 6 and 13,) has one end in the slot Z of the arm and the other end in a slot, or, in the feed-bar. This link at serves to move the-feed friction-ball d on the arm d of the horizontal bar, which connects the shuttle-shaft G and arms. As already stated, this connecting-bar L moves forward and back, the tapered end of the regulating-bar 0 also moves on its pivot 0 The farther the tapered end 0 of the regulating-bar is in the slotaof the feedbar the longer the stitch will be, because the slot n will be more nearly filled by the broader part of the tapered end, and there will, be less room in the slot 91 for play or lost motion of the link on, and consequently the said link will move the feed-bar L a greater distance. On the other hand, the more the tapered end 0 is with drawn from the slot at the greater will be the room therein for the play of the link m, and consequently the feed-bar will be moved by said link a less distance.

With this machine any suitable thread-take up device, N, may be used.

lhe presser-bar F is held down by a spring and raised by a lever, 11. The thread from the bobbin Q passes out through a cross'slot, r, in the shuttle-case. This cross-slotris shown in the cross-section of the shuttle, Fig. 11. and l is indicated by broken lines in Fig. 0, where a tension-spring, 8, covers the slot. As the; bobbinthread passes out of the cross'slot r, it may continually shift along the length of the said slot, because this slot extends in the same i direction as the axis of the bobbin q. Byl means of the cross-slot in the shuttle-case, inl stead of a mere round hole for the bobbinl thread, the liability of the said thread to wear a notch in the shuttle case is obviated. l A shnttle'plate, 10, has fixed vertical position crosswise ot' the machine, (see Figs. 1. 2, and 13,) and the tint side of the shuttle J is next to the'plate. In oscillating, the shuttle I moves close to the vertical surface of the plate and the latter confines the shuttle to its position in the holder K.

Having described my invention, I claim and desire to soon re by Letters Patent of the United States- 1. In a sewing-machine, the hollow overhanging arm with driving-shaft D journaled therein and having cam c thereon, the horizontal oscillating shaft I, with forked arm I), the arm d, with friction-ball d, the vertical oscillating shaft I, with arlnfat upper end and forked arm f at lower end, the feed-lifting shaft II and shuttle-shaft G, arms h, and bar g, the latter having friction-ball g, said parts being combined substantially as shown and described.

2. In a sewing-machine, the bed-plate A, with guide 2', the feed-bar L, with slot a, the shuttle'sliatt G, the arm Z, with segmental slot Z, and the link at, connecting said arm Z and bar L, the liftingbar II, with mechanism, substantially as described, connected to bars G and H, for imparting oscillating motion thereto, and the sliding bar 0, with tapering end inserted in said slot a, and having a stud passing through the bedplate for operating the same, substantially as and for the purpose set forth.

In testimony whereof I aflix my signature in the presence of two witnesses.

ERNEST HENRY 'JltllESTiElt.

\Vitnesses:

JOHN E. Moanis, .TNo. T. Mitnnox. 

